Saturday 3 March 2012
Speech: Luis von Ahn - Massive-scale online collaboration
After re-purposing CAPTCHA so each human-typed response helps digitize books, Luis von Ahn wondered how else to use small contributions by many on the Internet for greater good. At TEDxCMU, he shares how his ambitious new project, Duolingo, will help millions learn a new language while translating the Web quickly and accurately -- all for free.
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This is what happens when you realize that you can actually have an impact in the world through what you do for a living
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